2
Contents
PLEASE READ BEFORE PROCEEDING
...................... 3
Hazard Definitions ...................................................... 3
Safety Warnings and Codes ........................................3
1. DETERMINE WATER HEATER LOCATION
Location ........................................................................ 4-5
Clearances ....................................................................... 5
Combustion/Ventilation Air Requirements ................... 5-7
2. GENERAL VENTING
Conventional Venting .................................................... 8-9
Vent System Options ................................................ 10-24
E+Venting .................................................................. 10
Direct Vent Sidewall ................................................. 16
Direct Vent Vertical ..................................................... 20
Outdoor Installation ..................................................... 24
3. GAS CONNECTIONS
Gas Supply ..................................................................... 25
Gas Pressure and Piping ............................................... 25
Manifold Pressure and Piping .................................. 27-29
Supply Pressure Measurement ................................ 27-29
4. SYSTEM PIPING
Water Connections ......................................................... 30
Relief Valve and Low Water Cutoff ................................ 30
Heating Domestic Water ................................................ 31
Typical Piping ............................................................ 32-33
Scald ......................................................................... 33-34
5. ELECTRICAL CONNECTIONS
Electrical Requirements ................................................... 35
Temperature Adjustment .................................................. 35
Temperature Sensors ...................................................... 36
Room Thermostat Connections ........................................ 37
6. OPERATION AND STARTUP
Lighting Instructions ......................................................... 38
Hot Surface Ignition Control .............................................. 38
Operation and Diagnostic Lights ...................................... 39
Freeze Protection ............................................................. 39
Maintenance ................................................................ 40-41
Flame Patterns ................................................................. 40
Combustion Air Adjustments ....................................... 40-41
Burner Cleaning .......................................................... 41-42
Heat Exchanger Inspection ............................................... 42
Gas Train........................................................................... 42
7. DIAGRAMS
Ladder Diagram ............................................................... 43
Wiring Diagram................................................................. 44
8. TROUBLESHOOTING
Troubleshooting Charts ............................................... 45-46
REVISION
NOTES
........................................................... 48
DANGER
WARNING
CAUTION
CAUTION
NOTICE
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious
injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not
related to personal injury or property damage.
Hazard definitions
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels
or to important information concerning the life of the product.
Содержание Efficiency-Pac EW 150 -- 300
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